1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2016 BayLibre, SAS
4 * Author: Neil Armstrong <narmstrong@baylibre.com>
9 #include <environment.h>
11 #include <asm/arch/gx.h>
12 #include <asm/arch/mem.h>
13 #include <asm/arch/sm.h>
14 #include <asm/arch/eth.h>
16 #define EFUSE_SN_OFFSET 20
17 #define EFUSE_SN_SIZE 16
18 #define EFUSE_MAC_OFFSET 52
19 #define EFUSE_MAC_SIZE 6
23 u8 mac_addr[EFUSE_MAC_SIZE];
24 char serial[EFUSE_SN_SIZE];
27 meson_eth_init(PHY_INTERFACE_MODE_RGMII, 0);
29 /* Reset PHY on GPIOZ_14 */
30 clrbits_le32(GX_GPIO_EN(3), BIT(14));
31 clrbits_le32(GX_GPIO_OUT(3), BIT(14));
33 setbits_le32(GX_GPIO_OUT(3), BIT(14));
35 if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
36 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
37 mac_addr, EFUSE_MAC_SIZE);
38 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
39 eth_env_set_enetaddr("ethaddr", mac_addr);
42 if (!env_get("serial#")) {
43 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
45 if (len == EFUSE_SN_SIZE)
46 env_set("serial#", serial);